Comparison of quantum state protection against decoherence via weak measurement, a survey

• URL: http://arxiv.org/abs/2109.12842v2
• Date: Mon, 16 May 2022 12:01:20 GMT
• Title: Comparison of quantum state protection against decoherence via weak measurement, a survey
• Authors: Sajede Harraz, Shuang Cong, Juan J. Nieto
• Abstract summary: We discuss weak measurement quantum measurement reversal (WMQMR), weak measurement-based quantum feedback control (QFBC) and quantum feed-forward control (QFFC) By considering weak measurement, the aim is to find a balance between information gain and disturbance of the system caused by the measurement.
• Score: 0.8594140167290097
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: One of the crucial tasks in quantum systems is to reduce the effects of decoherence due to the unavoidable interactions between a system and its environment. Many protection schemes have been proposed recently, among them the weak measurement quantum measurement reversal (WMQMR), weak measurement-based quantum feedback control (QFBC) and quantum feed-forward control (QFFC) are reviewed in this paper. By considering weak measurement, the aim is to find a balance between information gain and disturbance of the system caused by the measurement. We classify different types of measurement and give the definition of noise sources and their effects on the state of the system. Finally, we compare and analyze the performance of the discussed protection schemes for different noise sources by numerical simulations.

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